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Every year, county appraisal districts mail out new value notices, and most homeowners glance at the number and file the letter away without a second thought. That habit can cost real money, since appraisal offices work from mass data and broad models rather than a personal walk-through of your house. Small errors in square footage, condition, or comparable sales can quietly inflate a bill for years if nobody catches them. The rest of this article walks through six clear signals that your latest notice deserves a closer look before the appeal window closes.
1. Your Assessed Value Jumped Sharply From Last Year
A steep, unexplained rise in your appraised value is often the first clue that something needs a second look. If your neighborhood saw modest price growth but your notice shows a double-digit jump, the appraisal office may have applied a broad area trend instead of your home’s actual condition. A property tax protest gives you a formal channel to present evidence and ask the review board to reconsider the figure before the deadline passes.
2. Neighboring Homes With Similar Features Are Valued Lower
Comparable properties tell a story, and when that story does not match your own notice, it raises a fair question. Two houses built the same year, on similar lots, with matching square footage should land in a similar valuation range, give or take small differences in upgrades. When yours sits noticeably higher than several nearby matches, the gap points to an inconsistency worth documenting.
Illustrative Comparison Example
The figures below are a hypothetical example, not an actual case, meant only to show what a value gap can look like on paper.
| Feature | Your Home | Comparable A | Comparable B |
| Square Footage | 2,100 | 2,150 | 2,080 |
| Year Built | 2005 | 2004 | 2006 |
| Assessed Value | $412,000 | $368,000 | $371,000 |
A gap like the one above, repeated across several nearby matches, gives the review board a clear pattern to weigh rather than a single isolated complaint.
3. The Assessment Lists Incorrect Property Details
Appraisal records rely on data pulled from permits, aerial imagery, and past field visits, so mistakes creep in more often than most owners expect. A wrong bedroom count, an extra bathroom, or a garage counted as finished living space can push the estimated value above reality. Per the Texas Comptroller of Public Accounts, owners generally have until May 15 or thirty days after the notice arrives, whichever date comes later, to correct these records through the formal review process.
Common Record Errors Worth Checking
- Incorrect living area or total square footage
- A pool or addition that was removed years ago but still counted
- Wrong lot dimensions or acreage figures
- Outdated condition ratings that ignore aging systems
4. Recent Sales in Your Area Don’t Support the New Value
Appraisal districts lean heavily on recent closed sales to build their models, so it helps to check whether those transactions genuinely reflect your street. A handful of high-end remodels nearby can pull the median upward even though your own home never changed. If the comparable sales used for your notice sit on busier streets, larger lots, or updated interiors, the mismatch becomes a strong talking point during a property tax protest hearing.
Reviewing a yearly appraisal notice takes only a few minutes, yet that short habit can prevent years of paying more than a fair share. Comparable sales, accurate records, and documented repairs each play a role in building a case the review board can weigh fairly. Staying alert to these six signs turns a routine mailing into an opportunity to keep local tax bills grounded in an accurate picture of a home’s true condition.
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